28618254073 has 4 divisors (see below), whose sum is σ = 28618839040. Its totient is φ = 28617669108.

The previous prime is 28618254047. The next prime is 28618254083. The reversal of 28618254073 is 37045281682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37045281682 = 2 ⋅18522640841.

It is a cyclic number.

It is not a de Polignac number, because 28618254073 - 2⁹ = 28618253561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28618254083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211653 + ... + 319426.

It is an arithmetic number, because the mean of its divisors is an integer number (7154709760).

Almost surely, 2^28618254073 is an apocalyptic number.

It is an amenable number.

28618254073 is a deficient number, since it is larger than the sum of its proper divisors (584967).

28618254073 is an equidigital number, since it uses as much as digits as its factorization.

28618254073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584966.

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 28618254073 in words is "twenty-eight billion, six hundred eighteen million, two hundred fifty-four thousand, seventy-three".